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Free Content Season Dependent Response of the Marsh Frog (Rana ridibunda) to Cadmium Exposure

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Abstract:

Cadmium toxicity related to cysteine metabolism and glutathione levels in several tissues of the Marsh frog (Rana ridibunda) collected in late spring were investigated after exposure to 80 mg CdCl2 L−1 for 168 h. The results were compared to those obtained in a previous experiment carried out in autumn. The most striking changes involved the brain which could not maintain a proper glutathione level and the testes in which neither GSH nor sulfane sulfur levels recovered. Substantial damage is expected in the presence of Cd which decreases the antioxidant status of these tissues. It seems that in spring, frogs had lesser tolerance for Cd in comparison with frogs in autumn. This may be caused by the transition to aerobic respiration after hibernation.

Keywords: CADMIUM; GLUTATHIONE; RANA RIDIBUNDA TISSUES; SULFANE SULFUR; SULFURTRANSFERASES

Document Type: Research Article

DOI: http://dx.doi.org/10.3409/173491606778557536

Publication date: September 1, 2006

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  • Folia biologica is an international quarterly journal that publishes papers on the broad field of experimental zoology, nuclear and chromosome research, and also ultrastructural studies. All papers are subject to peer reviews. Indexed in: ISI Master Journal List, Current Contents, Polish Scientific Journals Contents. I.F. 0.667
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